3M Bair Hugger 675, Service Manual

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English / 34-8720-2487-1
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Certifications
IEC 60601-1; IEC/EN 60601-1-2; UL 60601-1; CAN/CSA-C22.2, No.601.1; EN 55011; EN 80601-2-35; IEC 60529 Classification (IP) IPX1
Classification
Guidance and manufacturer’s declaration – electromagnetic emissions
The model 675 is intended for use in the electromagnetic environment specified below. The customer or the user of the model 675 should assure that it is used in such
an environment.
Emissions test Compliance Electromagnetic environment - guidance
RF emissions, CISPR 11 Group 1 The model 675 uses RF energy only for its internal function. Therefore, its RF emissions are very low and are not
likely to cause any interference in nearby electronic equipment.
RF emissions, CISPR 11 Class B The model 675 is suitable for use in all establishments, including domestic establishments and those directly
connected to the public low-voltage power supply network that supplies buildings used for domestic purposes.
Harmonic emissions, IEC 61000-3-2 Class A
Voltage fluctuations/Flicker emissions,
IEC 61000-3-3
Complies
Guidance and manufacturer’s declaration – electromagnetic immunity
The model 675 is intended for use in the electromagnetic environment specified below. The customer or the user of the model 675 should assure that it is used in such
an environment.
These guidelines may not apply in all situations. Electromagnetic propagation is affected by absorption and reflection from structures, objects and people.
IEC 60601
test level, Compliance level
Electromagnetic environment - guidance
Electrostatic discharge (ESD), IEC 61000-4-2
±8 kV contact Floors should be wood, concrete or ceramic tile. If floors are covered with synthetic material, the relative humidity should be at
least 30%.
±15 kV air
Electrical fast transient/burst, IEC 61000-4-4
±2 kV for power supply lines Mains power quality should be that of a typical commercial or hospital environment.
±1 kV for input/output lines
Surge, IEC 61000-4-5
±1 kV line to line Mains power quality should be that of a typical commercial or hospital environment.
±2 kV line(s) to earth
Voltage dips, short interruptions and voltage variations on power supply input lines, IEC 61000-4-11
<5% U
T
(>95% dip in U
T
) for 0,5 cycle Mains power quality should be that of a typical commercial or hospital environment. If the user of the model 675 requires
continued operation during power mains interruptions, it is recommended that the model 675 be powered from an
uninterruptible power supply or a battery.
40% U
T
(60% dip in U
T
) for 5 cycles
70% U
T
(30% dip in U
T
) for 25 cycles
<5% U
T
(>95% dip in U
T
) for 5 sec
U
T
is the a.c. mains voltage prior to
application of the test level.
Power frequency (50/60 Hz) magnetic field, IEC 61000-4-8
30 A/m
Power frequency magnetic fields should be at levels characteristic of a typical location in a typical commercial or
hospital environment.
IEC 60601
test level
Electromagnetic environment - guidance
Conducted RF, IEC 61000-4-6, and Radiated RF, IEC 61000-4-3
6 Vrms, 150 kHz to 80 MHz
10 V/m, 80 MHz to 2,5 GHz
Portable and mobile RF communications equipment should be used no closer to any part of the model 675, including cables,
than the recommended separation distance calculated from the equation applicable to the frequency of the transmitter.
Recommended separation distance
d = 1.2
d = 1.2 80 MHz to 800 MHz
d = 2.3 800 MHz to 2,5 GHz
where P is the maximum output power rating of the transmitter in watts (W) according to the transmitter manufacturer and d is
the recommended separation distance in meters (m).
At 80 MHz and 800 MHz, the higher frequency range applies.
Field strengths from fixed RF transmitters, as determined by an electromagnetic site survey, a should be less than the compliance
level in each frequency range. b
Interference may occur in the vicinity of equipment marked with the following symbol:
Notes
a Field strengths from fixed transmitters, such as base stations for radio (cellular/cordless) telephones and land mobile radios, amateur radio, AM and FM radio broadcast
and TV broadcast cannot be predicted theoretically with accuracy. To assess the electromagnetic environment due to fixed RF transmitters, an electromagnetic site
survey should be considered. If the measured field strength in the location in which the model 675 is used exceeds the applicable RF compliance level above, the model
675 should be observed to verify normal operation. If abnormal performance is observed, additional measures may be necessary, such as re-orienting or relocating the
model 675.
b Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3 V/m.